Amperex ECC189 6ES8 Vacuum Tube For Your Schiit Concert Orchestra oiled and keeping very good

oiled and keeping very good time

new in box matched pair of RCA Clear Top 7AU7 dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

44 and 45 where minimum is (65%) is 36 and 100% is 55

This Westinghouse 25AV5GT tube -- and another just like it -- tested to spec on our Paul Hart-calibrated TV7/U

This lot of two RCA Cunningham Radiotron 2B7 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Amperex ECC189 6ES8 Vacuum Tube For Your Schiit Concert Orchestra oiled and keeping very goodThis West German Amperex MANUFACTURED, RCA LABELED ECC189 6ES8 dual triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. It measured an outstanding and nearly perfectly balanced 92 93 where minimum (65%) is 50 50 and 100% is 77 77. This tube has steel support rods; an O getter and matte gray plates. As I write, I am playing Pink Floyd's Green Is The Colour" in my Schiit Audio Vali 2